BATTELLE MEMORIAL INST COLUMBUS OHIO COLUMBUS LABS
Both laboratory testing and field evaluation in a 600-foot saturation dive have shown that the breathing gas is effectively heated by the prototype device. However, the losses between the heater outlet and the diver are too great. To be truly effective, heat must be conserved from the time it leaves the heater until it enters the divers respiratory passages. Thus, losses between the heater and the diver must be minimized. The breating-gas heater is an effective tool for heating the breath of a diver under controlled research conditions. It can be used for human-subject research on subsequent chamber dives and will pave the way for the development of more compact, sophisticated units once the heating requirements of respiration are established by use of the prototype heater on further hyperbaric experiments.